When we went in Jan. two years ago......it was great weather. We would wear short sleeves and even shorts/capris with a light jacket. Now the mornings are colder and the nights too....so we would rent a locker in the parks to put our jackets once it warmed up. I would take sweat shirts to layer over short sleeves and the jacket. I would also bring some gloves too. I know in Novemeber a couple of times we had nights to wear our hands got cold. Hope this helps. I don't bring a ton of really warmer clothes....just layering works best.